Don't forget titles for links and alts for images! Also, if your site may potentially produce duplicate content, due to parameters in URLs etc, look into canoni

Don't forget titles for links and alts for images! Also, if your site may potentially produce duplicate content, due to parameters in URLs etc, look into canonical urls: http://www.seomoz.org/knowledge/duplicate-content http://www.seomoz.org/knowledge/duplicate-content